A selection of National Geographic's best photographs of 2017

Hummingbirds often brave downpours to gather the nectar needed to avoid starvation. This Anna’s hummingbird shakes off rain as a wet dog does, with an oscillation of its head and body. According to researchers at UC Berkeley, each twist lasts four-hundredths of a second and subjects the bird’s head to 34 times the force of gravity. (Sources: Victor Ortega-Jimenez and Robert Dudley)